body{
			background-image:url(imgs/美少女.jpg);
			background-repeat: no-repeat;
			background-size: cover;
		}
		.background{
			opacity: 0.5;
		}
		#content{
			background-color: rgba(255,255,255,0.5);
			width: 900px;height: 1500px;
			margin: 0 auto;
		}
		#header{
			height: 150px;width: 900px;
			background-color: lightblue;
		}
		#main{
			height:800px;width: 900px;
		}
		#footer{
			height: 100px;width: 900px;
			background-color: antiquewhite;
		}
		#left{
			height: 800px;width: 250px;
			background-color: aquamarine;
			float: left;
		}
		#right{
			height: 800px;width: 650px;
			background-color:orange;
			float: left;
		}
		#header .img{
			height: 100px;width: 100px;
			left: 75px;top: 25px;
			position: relative;
			filter:saturate(180%);
			float: left;
		}
		ul li{
			height: 150px;width: 170px;
			list-style:none;
			border: 1px solid white;
			text-align: center;
			left: 0px;
		}
		#left a{
			line-height:150px;
			text-align:center;
			text-decoration:none;
			font-size: 1.5em;
			color: black;
		}
		li:hover{
			background-color: white;
		}
		#div01{
			line-height: 40px;
			text-indent: 2em;
			padding: 15px;
			height: 375px;
			overflow: scroll;
		}
		#div02{
			height: 400px;
			padding: 20px;
		}
		.text{
			text-align: center;
			font-size: 2em;
		}
		#div03{
			height: 150px;width: 700px;
			float: right;
			text-align: center;
			line-height: 150px;
			font-size: 3em;
		}